Sterilizer



Patented June 29; 1920.

2 SHEEYS-SHEET 1.

C. W. BRYANT.

STEHILIZER. APPLICATION FILED MAR. 24, 1919.

F7 2 CbRW/N W 5/? 7" u/rflrra/wYfrJ- R i w E m -fim nhwn H M h w mwimwwmwh u .HuHMmT m M 3 M M 5 m m a 2 m w W m 2 0 5 m N2 Q 2 m M 3 fi 2 Lflw 83 M 5 M Mm 462 2 3 C. W. BRYANT.

STERILIZER.

APPLICATION FILED MAR 24, 19H). 1,345,123. Patented June 29, 1920.

2 SHEETS SHEET 2.

UNITED STATES PATENT OFFICE.

CORWIN W. BRYANT, 0F MINNEAPOLIS, MINNESOTA.

STEBILIZER.

Specification of Letters Patent. Patented June 29, 1920.

Application filed March 24, 1919. Serial No. 284,574.

will not be rolled together or upon one an;

other when the tray is raised out of the boiler or sterilizing agent.

A further object is to provide a sterilizing tray so mounted that whenraised out of the boiler the drippings will flow back into the boilerinstead of running down on the outside of the housing or casingtherefor.

-A further object is to provide a sterilizer of comparatively simple,inexpensive construction and one which is readily accessible forrepairing or cleansing purposes.

Other objects of the invention will appear from the following detaileddescription.

The invenltion consists generally in various constructions andcombinations, all as hereinafter described and particularly pointed outin the claims.

In the accompanying drawings forming part of this specification,

Figure 1 is a side elevation of a sterilizer embodying my invention,with a portion of the wall broken away to illustrate the position .ofthe sterilizing tray therein,

Fig. 2 is a transverse sectional view on the line 2-2 of Fig. 1 showingthe preferred:

the longitudinal center thereof, this point beingzproperly determined bysuitable measmanner of supporting the tray,

Fig. 3 is a side elevation of the sterilizer, showing the tray in' itsraised position,

Fig. 4 is a detail section on the line 4-4- of Fig. 3.

In the drawing, .2 represents the outer casing for the boiler or tank,having suitable supporting legs 3, and 4 is the boiler proper, made ofaluminum or other suitable material, preferably having its walls curvedand merging into the bottom to avoid the formation of corners or anglesin the boiler. A series of integral webs 5 are formed, preferably on theouter walls of the boiler, the vertical edges of the webs form-ingcontinuations of the upper vertical portions of the boiler walls and thehorizontal edges of the webs being in alinement with the under surfaceof the base of the boiler. A suitable faucet 7 is mounted in the bottomof the boiler for drawing off the water therein whenever desired. Theboiler has ears 8 thereon at the top and a cover 9 is hinged on thesecars and is adapted to swing to a horizontal position and close the topof the boiler, said cover being preferably arched for convenience inconnecting the links thereto by means of which the tray is raised whenthe cover is opened. The cover is so Inounted that when it is in itsraised position it will remain open by gravity and provision is made, aswill hereinafter appear, for supporting the tray in its raised positionthrough the weight of the cover.

10 represents'the tray in which the instruments to be sterilized areplaced. This tray is immersed in the liquid in the boiler and allowed toremain there until the instruments are thoroughly sterilized. Many ofthe surgical instruments have sharp cutting edges and it is desirable,of course, that these instruments do not rub upon one another or rollaround in the tray, as the keen edges would become dulled thereby andnecessitate frequent sharpening. It is also desirable that the tray beraised in such a manner that the drippings therefrom will flow back intothe boiler. I. therefore provide parallel links ll'and 12 pivoted at 13and 14 on the end walls of the boiler and having pivotal connections at15 with the middle portion of the end walls of the tray. Links 16 arepivoted to the links 12 near their pivots on the tray and are pivoted at17 to the cover 9 preferably at a point about midway between the hingeof the cover and urements so that when the cover is raised, the traywill be lifted also, substantially without horizontal movement andwithout swaying or rocking. When the cover is fully open, the tray willbe lifted above the level of the boiler where the instruments can beeasily reached and where the drippings from the tray will flow back intothe boiler. The cover will swingvback to the opposite side of the centerof its pivots from the tray and form a counter-balance for holding thetray in its open position, the parallel links 11 and 12 bearing againsteach other and forming a' stop. No levers, springs or cams are necessaryin this device, the cover and the connecting links forming the means forlifting the tray and supporting it in its raised position.

wedge-shaped in cross section to fit dove-' tailed guides 21 provided inplates 20 which are connected to the links 11 and 12 by the pivot pins15. The lower ends of the plates 20 are preferably provided with stops21* which limit the downward movement of the tray when mounted in theboiler. The

tray is preferably provided with handles 22 by means of which it can beconveniently placed in its support in the boiler and as readily removedtherefrom. a

The studs 15 will be mounted parallel with the pivots 13 and 14. Whenthe device is in use, the tray rests upon the stops 21 and is dippeddown into the liquid in the boiler when the cover is closed and raisedto a point entirely clear of the boiler when the cover is opened. Thetray is shown provided with a series of perforations 22 and it will beunderstood that any other suitable material, such as wire mesh, may beused for this perforated plate bottom, the purpose of the perforationsbeing to allow the sterilizing liquid and drippings from the instrumentsto flow back into the boiler as soon as the tray is raised. By makingthe tray removable, the instruments can be placed therein at a distancefrom the boiler and the tray then seated in its supports and loweredinto the boiler for sterilizing and when this work has been performed,the cover may be raised and the tray lifted to a point where theinstruments can be conveniently reached or the entire tray can beremoved, if desired.

I claim as my invention:

1. A sterilizer comprising a boiler adapted to contain a sterilizingliquid, an instru ment tray arranged therein, a cover for said boiler,parallel links connecting said tray with the walls of the boiler andmeans connecting said cover and links for lifting said tray verticallyto a point above the boiler and substantially within the plane of thevertical walls thereof.

2. A sterilizer comprising a boiler adapted to contain a sterilizingliquid, an instrument tray fitting therein, parallel links connectingsaid tray with the end walls of the boiler, a cover hinged at one sideof said boiler and links connecting said cover near its hinge with oneof said parallel links at each end of the tray near their pivotalconnection with the tray.

3. A sterilizer comprising a boiler adapted to contain a sterilizingliquid, a cover hinged to one side of said boiler and adapted, whenopened, to remain open by gravity, an instrument tray fitting withinsaid boiler,

parallel links pivotally connecting the end a plate mounted on saidlinks and having a vertical guideway, means connecting said links nearsaid guideway with said cover, and a tray having ribs thereon adapted toslide in said guideway and supported therein.

5. A sterilizer comprising a boiler adapted to contain a sterilizingliquid, a cover therefor, links pivotally connected with the walls ofsaid boiler, blocks pivotally supported by said links and havingvertical dove-tailed guideways therein, means connecting said links withsaid cover for oscillating said links when said cover is opened orclosed, and a tray having vertical ribs thereon to slide in theguideways of said plates and means for limiting the downward movement ofsaid ribs in said guideways.

6. A sterilizer comprising a boiler adapted to contain a sterilizingliquid, an instrument tray arranged therein, a cover for said boiler,links connecting said tray with the walls of said boiler and meansconnect ing said cover and links for lifting said tray vertically to apoint above the boiler and substantially within the plane of thevertical walls thereof.

7. A sterilizer comprising a boiler adapted to contain a sterilizingliquid, a cover therefor, links pivotally connected with the walls ofthe boiler, plates mounted on said links and having vertical guideways,means connecting said links with said cover, and a tray mounted to slidein said guideways.

In witness whereof I have hereunto set my hand this 28" day of February,1919.

OORWIN W. BRYANT.

